Merge tag 'dmaengine-fix-4.9-rc6' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
"Some driver fixes which we pending in my tree:

- return error code fix in edma driver
- Kconfig fix for genric allocator in mmp_tdma
- fix uninitialized value in sun6i
- Runtime pm fixes for cppi"

* tag 'dmaengine-fix-4.9-rc6' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: cppi41: More PM runtime fixes
dmaengine: cpp41: Fix handling of error path
dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected
dmaengine: cppi41: Fix list not empty warning on module removal
dmaengine: sun6i: fix the uninitialized value for v_lli
dmaengine: mmp_tdma: add missing select GENERIC_ALLOCATOR in Kconfig
dmaengine: edma: Fix error return code in edma_alloc_chan_resources()

drivers/dma/Kconfig

···
 	depends on ARCH_MMP || COMPILE_TEST
 	select DMA_ENGINE
 	select MMP_SRAM if ARCH_MMP
+	select GENERIC_ALLOCATOR
 	help
 	  Support the MMP Two-Channel DMA engine.
 	  This engine used for MMP Audio DMA and pxa910 SQU.

drivers/dma/cppi41.c

···
 
 		while (val) {
 			u32 desc, len;
+			int error;
+
+			error = pm_runtime_get(cdd->ddev.dev);
+			if (error < 0)
+				dev_err(cdd->ddev.dev, "%s pm runtime get: %i\n",
+					__func__, error);
 
 			q_num = __fls(val);
 			val &= ~(1 << q_num);
···
 			dma_cookie_complete(&c->txd);
 			dmaengine_desc_get_callback_invoke(&c->txd, NULL);
 
-			/* Paired with cppi41_dma_issue_pending */
 			pm_runtime_mark_last_busy(cdd->ddev.dev);
 			pm_runtime_put_autosuspend(cdd->ddev.dev);
 		}
···
 	int error;
 
 	error = pm_runtime_get_sync(cdd->ddev.dev);
-	if (error < 0)
+	if (error < 0) {
+		dev_err(cdd->ddev.dev, "%s pm runtime get: %i\n",
+			__func__, error);
+		pm_runtime_put_noidle(cdd->ddev.dev);
+
 		return error;
+	}
 
 	dma_cookie_init(chan);
 	dma_async_tx_descriptor_init(&c->txd, chan);
···
 	int error;
 
 	error = pm_runtime_get_sync(cdd->ddev.dev);
-	if (error < 0)
+	if (error < 0) {
+		pm_runtime_put_noidle(cdd->ddev.dev);
+
 		return;
+	}
 
 	WARN_ON(!list_empty(&cdd->pending));
 
···
 	struct cppi41_dd *cdd = c->cdd;
 	int error;
 
-	/* PM runtime paired with dmaengine_desc_get_callback_invoke */
 	error = pm_runtime_get(cdd->ddev.dev);
 	if ((error != -EINPROGRESS) && error < 0) {
+		pm_runtime_put_noidle(cdd->ddev.dev);
 		dev_err(cdd->ddev.dev, "Failed to pm_runtime_get: %i\n",
 			error);
 
···
 		push_desc_queue(c);
 	else
 		pending_desc(c);
+
+	pm_runtime_mark_last_busy(cdd->ddev.dev);
+	pm_runtime_put_autosuspend(cdd->ddev.dev);
 }
 
 static u32 get_host_pd0(u32 length)
···
 	deinit_cppi41(dev, cdd);
 err_init_cppi:
 	pm_runtime_dont_use_autosuspend(dev);
-	pm_runtime_put_sync(dev);
 err_get_sync:
+	pm_runtime_put_sync(dev);
 	pm_runtime_disable(dev);
 	iounmap(cdd->usbss_mem);
 	iounmap(cdd->ctrl_mem);
···
 static int cppi41_dma_remove(struct platform_device *pdev)
 {
 	struct cppi41_dd *cdd = platform_get_drvdata(pdev);
+	int error;
 
+	error = pm_runtime_get_sync(&pdev->dev);
+	if (error < 0)
+		dev_err(&pdev->dev, "%s could not pm_runtime_get: %i\n",
+			__func__, error);
 	of_dma_controller_free(pdev->dev.of_node);
 	dma_async_device_unregister(&cdd->ddev);
 

drivers/dma/edma.c

···
 	if (echan->slot[0] < 0) {
 		dev_err(dev, "Entry slot allocation failed for channel %u\n",
 			EDMA_CHAN_SLOT(echan->ch_num));
+		ret = echan->slot[0];
 		goto err_slot;
 	}
 

drivers/dma/sun6i-dma.c

···
 
 	burst = convert_burst(8);
 	width = convert_buswidth(DMA_SLAVE_BUSWIDTH_4_BYTES);
-	v_lli->cfg |= DMA_CHAN_CFG_SRC_DRQ(DRQ_SDRAM) |
+	v_lli->cfg = DMA_CHAN_CFG_SRC_DRQ(DRQ_SDRAM) |
 		DMA_CHAN_CFG_DST_DRQ(DRQ_SDRAM) |
 		DMA_CHAN_CFG_DST_LINEAR_MODE |
 		DMA_CHAN_CFG_SRC_LINEAR_MODE |